* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --bg-start: #0f172a;
  --bg-end: #1e293b;
  --card: rgba(15, 23, 42, 0.72);
  --card-border: rgba(255, 255, 255, 0.12);
  --text: #f8fafc;
  --muted: rgba(248, 250, 252, 0.78);
  --primary: #38bdf8;
  --primary-2: #22c55e;
  --shadow: 0 30px 80px rgba(2, 6, 23, 0.35);
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background:
    radial-gradient(circle at top, rgba(56, 189, 248, 0.2), transparent 35%),
    linear-gradient(160deg, var(--bg-start), var(--bg-end));
  color: var(--text);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.page-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.maintenance-card {
  width: min(100%, 920px);
  padding: clamp(28px, 4vw, 56px);
  border: 1px solid var(--card-border);
  border-radius: 28px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  color: #bae6fd;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge::before {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ef4444;
  box-shadow: 0 0 0 6px rgba(239, 68, 68, 0.15);
  animation: pulse-dot 1.4s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5);
  }
  50% {
    transform: scale(1.15);
    box-shadow: 0 0 0 8px rgba(239, 68, 68, 0);
  }
}

.site-title {
  margin: 12px 0 24px;
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: rgb(238, 160, 6);
  line-height: 1.1;
}

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
  margin-top: 24px;
}

.title {
  margin: 14px 0 0;
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: clamp(1.2rem, 2.6vw, 1.55rem);
  line-height: 1.35;
  font-weight: 900;
  letter-spacing: 0.01em;
  color: #e2e8f0;
}

.message {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(248, 250, 252, 0.9);
}

.message-link {
  color: #fbbf24;
  font-weight: 900;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.contact-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.contact-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 20px;
  border-radius: 16px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.contact-button:hover {
  transform: translateY(-1px);
}

.button-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  flex: 0 0 22px;
}

.button-icon svg,
.button-icon img {
  width: 100%;
  height: 100%;
  display: block;
}

.contact-button.call {
  background: rgb(26, 174, 80);
  box-shadow: 0 14px 30px rgba(26, 174, 80, 0.25);
}

.contact-button.zalo {
  background: rgb(30, 174, 239);
  box-shadow: 0 14px 30px rgba(30, 174, 239, 0.24);
}

.domain-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 28px;
}

.domain-item {
  display: grid;
  gap: 8px;
  padding: 18px 20px;
  border-radius: 18px;
  color: #111827;
  box-shadow: 0 10px 22px rgba(2, 6, 23, 0.16);
}

.domain-old {
  background: rgb(218, 218, 218);
  opacity: 0.88;
}

.domain-old .domain-label,
.domain-old .domain-value {
  color: rgba(17, 24, 39, 0.68);
}

.domain-link {
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.domain-link:hover,
.domain-link:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(2, 6, 23, 0.22);
  filter: saturate(1.03);
}

.domain-link:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.75);
  outline-offset: 3px;
}

.domain-new {
  background: rgb(238, 160, 6);
}

.domain-label {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(17, 24, 39, 0.78);
}

.domain-value {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  font-weight: 900;
  line-height: 1.25;
  word-break: break-word;
  color: #111827;
}

.domain-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: max-content;
  margin-top: 4px;
  padding: 8px 14px;
  border-radius: 999px;
  background: #111827;
  color: #f8fafc;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.domain-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 0 auto;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.14);
  border: 1px solid rgba(186, 230, 253, 0.24);
  font-size: 1.2rem;
  font-weight: 900;
  color: #e2e8f0;
  line-height: 1;
  text-shadow: 0 2px 10px rgba(2, 6, 23, 0.35);
}

.info-list {
  display: grid;
  gap: 14px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.info-item {
  display: grid;
  gap: 8px;
}

.contact-note {
  font-size: 0.95rem;
  line-height: 1.6;
  color: rgba(248, 250, 252, 0.72);
}

.info-label {
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(191, 219, 254, 0.9);
}

.info-value {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--text);
}

.bottom-note {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px dashed rgba(255, 255, 255, 0.2);
  color: rgba(248, 250, 252, 0.78);
  font-size: 0.95rem;
  line-height: 1.7;
}

.bottom-note p {
  margin: 0;
}

.bottom-note p + p {
  margin-top: 8px;
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 540px) {
  .page-shell {
    padding: 14px;
  }

  .maintenance-card {
    padding: 22px;
    border-radius: 22px;
  }

  .contact-button {
    width: 100%;
  }
}